[PATCH v3 RESEND 1/1] staging: ion: debugfs invalid gfp mask

[Derek Yerger]

 From drivers/staging/android TODO file - sparse errors.

The current code attempts assignment of -1 to an unsigned type. Note that in a
downstream function ion_page_pool_shrink this mask is only ever evaluated
against __GFP_HIGHMEM (drivers/staging/android/ion/ion_page_pool.c, line 125).

Signed-off-by: Derek Yerger <dy at drexel.edu>
Reviewed-by: Laura Abbott <labbott at redhat.com>
---
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index c97e82b..a9c8861 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -1524,7 +1524,7 @@ static int debug_shrink_set(void *data, u64 val)
  	struct shrink_control sc;
  	int objs;

-	sc.gfp_mask = -1;
+	sc.gfp_mask = GFP_HIGHUSER;
  	sc.nr_to_scan = val;

  	if (!val) {
@@ -1542,7 +1542,7 @@ static int debug_shrink_get(void *data, u64 *val)
  	struct shrink_control sc;
  	int objs;

-	sc.gfp_mask = -1;
+	sc.gfp_mask = GFP_HIGHUSER;
  	sc.nr_to_scan = 0;

  	objs = heap->shrinker.count_objects(&heap->shrinker, &sc);